Fascinating presentations from this year’s TED conferences.

Kate Harman on – The Art of Wearable Communications

Patrick Meier at TEDx Silicon Valley (July 2011) –  Crisis Mapping

WiFi From Every Lightbulb

Rebecca MacKinnon describes the expanding struggle for freedom and control in cyberspace.

Economics writer Tim Harford studies complex systems — and finds a surprising link among the successful ones: they were built through trial and error. In this sparkling talk from TEDGlobal 2011, he asks us to embrace our randomness and start making better mistakes.

If you are accessing this site with a mobile device you may not be able to see the videos.  If so use the link at the foot of the page to transfer  to the “desktop site”.